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He L, Zhou Z, Shao Y, Yang Z, Zhou S, Zou X, Zhou Y, Tan G. Bradykinin potentially stimulates cell proliferation in rabbit corneal endothelial cells through the ZO‑1/ZONAB pathway. Int J Mol Med 2018; 42:71-80. [PMID: 29568941 PMCID: PMC5979832 DOI: 10.3892/ijmm.2018.3580] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2017] [Accepted: 03/05/2018] [Indexed: 12/20/2022] Open
Abstract
Bradykinin (BK) has been demonstrated to induce proliferation in several types of cell in ex vivo corneas. However, the mechanisms underlying the action of BK on corneal endothelial cells (CECs) remain largely unknown. The present study aimed to investigate the effect of BK on rabbit corneal endothelial cell (RCEC) proliferation, and assess the involvement of the zonula occludens‑1(ZO‑1)/ZO‑1associated nucleic acid binding protein (ZONAB) pathway. Cell proliferation and cell cycle distribution was analyzed following treatment with BK (0.01, 0.1,1.0 or 10.0 µM) for the indicated time intervals (24, 48, 72 and 96 h), or following BK treatment combined with transfection of ZONAB‑small interfering (si)RNA for 72 h. In addition, the expression of tight junction ZO‑1, nuclear ZONAB, proliferating cell nuclear antigen(PCNA) and cyclin D1 were evaluated using western blotting or immunofluorescence. BK treatment was demonstrated to induce time‑ and concentration‑dependent cell proliferation and cell cycle progression, along with the upregulation of tight junction ZO‑1 and nuclear ZONAB, as well as PCNA and cyclin D1 protein expression. Furthermore, knockdown with ZONAB‑siRNA inhibited cell proliferation, induced cell cycle arrest and downregulated PCNA and cyclin D1 protein expression. ZONAB knockdown therefore successfully reversed the increase in proliferation induced by BK treatment. Taken together, these results suggested that BK stimulated RCEC proliferation, potentially via the ZO‑1/ZONAB pathway. The signaling paradigm disclosed in the present study potentially serves as an important therapeutic target for cornea regeneration and transplantation.
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Affiliation(s)
- Lixian He
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Zhou Zhou
- Medical College, University of South China, Hengyang, Hunan 421001, P.R. China
| | - Yi Shao
- Department of Ophthalmology, The First Affiliated Hospital of Nanchang University, Jiangxi Province Clinical Ophthalmology Institute, Nanchang, Jiangxi 330006, P.R. China
| | - Zhen Yang
- Department of Cardiology, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
| | - Shuangshuang Zhou
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Xuexiang Zou
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Ying Zhou
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
| | - Gang Tan
- Department of Ophthalmology, The First Affiliated Hospital of University of South China, Hengyang, Hunan 421001, P.R. China
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Thebault S, González C, García C, Zamarripa DA, Nava G, Vaca L, López-Casillas F, de la Escalera GM, Clapp C. Vasoinhibins Prevent Bradykinin-Stimulated Endothelial Cell Proliferation by Inactivating eNOS via Reduction of both Intracellular Ca2+ Levels and eNOS Phosphorylation at Ser1179. Pharmaceuticals (Basel) 2011. [PMCID: PMC4058677 DOI: 10.3390/ph4071052] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Stéphanie Thebault
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +52-442-238-1029; Fax: +52-442-238-1005
| | - Carmen González
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
| | - Celina García
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
| | - David Arredondo Zamarripa
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
| | - Gabriel Nava
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
| | - Luis Vaca
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Del. Coyoacán, México, D.F., 04510, Mexico; E-Mails: (L.V.); (F.L.-C.)
| | - Fernando López-Casillas
- Instituto de Fisiología Celular, Universidad Nacional Autónoma de México (UNAM), Ciudad Universitaria, Del. Coyoacán, México, D.F., 04510, Mexico; E-Mails: (L.V.); (F.L.-C.)
| | - Gonzalo Martínez de la Escalera
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
| | - Carmen Clapp
- Instituto de Neurobiología, Universidad Nacional Autónoma de México (UNAM), Campus UNAM-Juriquilla, Querétaro 76230, Mexico; E-Mails: (C.G.); (C.G.); (D.A.Z.); (G.N.); (G.M.E.); (C.C.)
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Mamo S, Kobolak J, Borbíró I, Bíró T, Bock I, Dinnyes A. Gene targeting and Calcium handling efficiencies in mouse embryonic stem cell lines. World J Stem Cells 2010; 2:127-40. [PMID: 21607130 PMCID: PMC3097933 DOI: 10.4252/wjsc.v2.i6.127] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2010] [Revised: 10/05/2010] [Accepted: 10/12/2010] [Indexed: 02/06/2023] Open
Abstract
AIM To compare gene targeting efficiencies, expression profiles, and Ca(2+) handling potentials in two widely used mouse embryonic stem cell lines. METHODS The two widely used mouse embryonic stem cell lines, R1 and HM-1, were cultured and maintained on Mitomycin C treated mouse embryonic fibroblast feeder cell layers, following standard culture procedures. Cells were incubated with primary and secondary antibodies before fluorescence activated cell sorting analysis to compare known pluripotency markers. Moreover, cells were harvested by trypsinization and transfected with a kinase-inactive murine Tyk2 targeting construct, following the BioRad and Amaxa transfection procedures. Subsequently, the cells were cultured and neomycin-resistant cells were picked after 13 d of selection. Surviving clones were screened twice by polymerase chain reaction (PCR) and finally confirmed by Southern blot analysis before comparison. Global gene expression profiles of more than 20 400 probes were also compared and significantly regulated genes were confirmed by real time PCR analysis. Calcium handling potentials of these cell lines were also compared using various agonists. RESULTS We found significant differences in transfection efficiencies of the two cell lines (91% ± 6.1% vs 75% ± 4.2%, P = 0.01). Differences in the targeting efficiencies were also significant whether the Amaxa or BioRad platforms were used for comparison. We did not observe significant differences in the levels of many known pluripotency markers. However, our genome-wide expression analysis using more than 20 400 spotted cDNA arrays identified 55 differentially regulated transcripts (P < 0.05) implicated in various important biological processes, including binding molecular functions (particularly Ca(2+) binding roles). Subsequently, we measured Ca(2+) signals in these cell lines in response to various calcium agonists, both in high and low Ca(2+) solutions, and found significant differences (P < 0.05) in the regulation of Ca(2+) homeostasis between the investigated cell lines. Then we further compared the detection and expression of various membrane and intracellular Ca(2+) receptors and similarly found significant (P < 0.05) variations in a number of calcium receptors between these cell lines. CONCLUSION Results of this study emphasize the importance of considering intrinsic cellular variations, during selection of cell lines for experiments and interpretations of experimental results.
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Affiliation(s)
- Solomon Mamo
- Solomon Mamo, Julianna Kobolak, Andras Dinnyes, Genetic Reprogramming Group, Agricultural Biotechnology Center, Szent-Gyorgyi Albert ut. 4, H-2100 Gödöllő, Hungary
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Landreville S, Coulombe S, Carrier P, Gelb MH, Guérin SL, Salesse C. Expression of phospholipases A2 and C in human corneal epithelial cells. Invest Ophthalmol Vis Sci 2004; 45:3997-4003. [PMID: 15505048 PMCID: PMC2424249 DOI: 10.1167/iovs.04-0084] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
PURPOSE To achieve a better understanding of the involvement of phospholipases in the inflammation and wound-healing processes in human corneal epithelial cells (HCECs), expression of phospholipase A2s (PLA2s) and phospholipase Cs (PLCs) was examined in the human corneal epithelium. METHODS Specific primers were designed for RT-PCR amplification of the known secreted (s)PLA2, cytosolic (c)PLA2, and PLC mRNAs. Corresponding PCR products were cloned and the DNA sequenced. Immunofluorescence of flatmounted corneal sections and Western blot analyses were used to detect the PLA2s and PLCs expressed by HCECs. RESULTS The mRNAs for the following phospholipases were detected by RT-PCR in the HCECs: sPLA2GIII, -GX, and -GXIIA; cPLA2alpha and -gamma; PLCbeta1, -beta2, -beta3, -beta4, -gamma1, -gamma2, -delta1, -delta3, -delta4, and -epsilon. Immunofluorescence analyses conducted on corneal epithelium cryosections and Western blot on freshly isolated HCECs demonstrated the presence of sPLA2GIII, -GX, and -GXIIA; cPLA2alpha and -gamma; and PLCbeta2, -beta3, -gamma1, -gamma2, and -delta3. CONCLUSIONS Many phospholipase isoforms are expressed by HCECs and may play a major role in signal transduction (PLCs) as well as in the release of precursors of potent mediators of inflammation, such as leukotrienes and prostaglandins (PLA2s). Moreover, the sPLA2s expressed by the corneal epithelium could be involved in the normal antibacterial activity in the tears and in wound healing.
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Affiliation(s)
- Solange Landreville
- Unité de Recherche en Ophtalmologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec (CHUQ), Pavillon du Centre Hospitalier de l’Université Laval (CHUL), Faculté de Médecine
| | - Stéphanie Coulombe
- Unité de Recherche en Ophtalmologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec (CHUQ), Pavillon du Centre Hospitalier de l’Université Laval (CHUL), Faculté de Médecine
| | - Patrick Carrier
- Laboratoire d’Organogenèse Expérimentale, Centre Hospitalier Affilié Universitaire, Pavillon Saint-Sacrement, Université Laval, Sainte-Foy, Québec, Canada
| | - Michael H. Gelb
- Departments of Chemistry and Biochemistry, University of Washington, Seattle, Washington
| | - Sylvain L. Guérin
- Centre de Recherche en Oncologie et Endocrinologie Moléculaire, Centre de Recherche du Centre Hospitalier Universitaire de Québec (CHUQ), Pavillon du Centre Hospitalier de l’Université Laval (CHUL), Faculté de Médecine
| | - Christian Salesse
- Unité de Recherche en Ophtalmologie, Centre de Recherche du Centre Hospitalier Universitaire de Québec (CHUQ), Pavillon du Centre Hospitalier de l’Université Laval (CHUL), Faculté de Médecine
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Dunér T, Conlon JM, Kukkonen JP, Akerman KEO, Yan YL, Postlethwait JH, Larhammar D. Cloning, structural characterization and functional expression of a zebrafish bradykinin B2-related receptor. Biochem J 2002; 364:817-24. [PMID: 12049646 PMCID: PMC1222631 DOI: 10.1042/bj20011201] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
The actions of bradykinin (BK) in mammals are mediated through the activation of the B1 and B2 BK receptors. The only BK receptor that has been cloned from a non-mammalian species is a B2-like receptor from the chicken (termed the ornithokinin receptor). Pharmacological studies have demonstrated the presence of BK receptors in tissues of teleost fishes, such as trout and cod, but the ligand-binding properties of these receptors differ appreciably from those of the mammalian and chicken receptors. We report here the cloning of a B2-like receptor in zebrafish that shares 35% identity with human B2 and 30% identity with human B1. Phylogenetic analyses confirm a closer relationship with B2 than B1. The receptor gene was mapped to linkage group 17, which is syntenic to the human B2-B1 gene region. After functional expression of the zebrafish B2 receptor in mammalian cells, nanomolar concentrations of trout BK ([Arg0,Trp5,Leu8]-BK) and the derivative [des-Arg0,Trp5,Leu8]-BK (where 'des' indicates a missing amino acid) induced a significant transient rise in intracellular free Ca2+. The B1-selective analogue [Arg0,Trp5,Leu8,des-Arg9]-BK was inactive at nanomolar concentrations. Taken together, these results strongly support the gene's identity as a piscine orthologue of the mammalian B2 receptor.
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Affiliation(s)
- Torun Dunér
- Department of Neuroscience, Unit of Pharmacology, Uppsala University, P.O. Box 593, SE-751 24 Uppsala, Sweden
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